Now I need to implement such a function: the android side and the server side need to keep connected, and the android side needs to send heartbeat every other period of time,
Now I need to implement such a function: the android side and the server side need to keep connected, and the android side needs to send heartbeat every other period of time,
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It is necessary to record the user's online time and departure time. Now I use the netty framework, but when the connection is successful, I cannot know the specific user ID (because the time needs to be recorded in the database), ask for some ideas, or have other moreView All
In order to maintain the connection between the Android side and the server side, WebSocket technology can be used.WebSocket is a protocol that implements full duplex communication in the browser, and can also be implemented on the Android side using the related SDK. On the Android side, you first need to initiate a connection to the server through a network request and perform authentication.Then, a heartbeat message is sent to the server every once in a while.When you receive a response from the server, you can perform corresponding operations according to the response. The specific implementation steps are as follows: 1. Send a connection request to the server and perform authentication. 2. Send a heartbeat message to the server every other period of time.The heartbeat message can be string data in JSON format. 3. When receiving a response from the server, perform corresponding operations according to the response. 4. If no response is received from the server for a long time, the connection is considered disconnected and the connection request is re initiated. Pay attention to the following issues during code writing: 1. Whether the connection request is successful: If the connection request is not successful, you need to re initiate the connection request. 2. Heartbeat message content: Heartbeat message content needs to be designed according to specific business needs, and cannot be too frequent or too few. 3. Processing server response: When receiving the server response, you need to parse and process the data. To sum up, the above steps and precautions are to maintain connection with the server and send heartbeat messages on the Android side.By using WebSocket technology, reliable data transmission and real-time communication can be realized.
ZOL Q&A>mobile phone>Other classifications>Now I need to implement such a function: the android side and the server side need to keep connected, and the android side needs to send heartbeat every other period of time,
